Air nozzle por drying purposes



Nov. 2 1926.

K. HERMAN AIR NOZZLE FOR DRYING PURPOSES Filed Dec. 7, 1925 2Sheets-Sheet 1 ooo oooo

Nmn 2 3926.

` K. HERMAN AIR NozzLE FOR DRUM@ PURPOSES 1925 2 Sheets-Sheet 2 FiledDele. '7,

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Patented Nov. 2, 1926.

PATENT OFFICE.

KARL HERMAN, 0F TRENTON, NEW JERSEY.

AIR NOZZLE FOR DRYIN'G PURPOSES.

Application led December This invention relates to air nozzles fordrying purposes and its objects are to provide a nozzle with whichmoistened articles may be quickly dried.

These objects, and other advantageous ends which will be describedhereinafter, I at* tain in the following manner, reference be ing had tothe accompanying drawings in which Figure l is a plan View of a nozzlemade accordance with my invention,

Figure 2 a section on line 2 2 of Figure l,

Figure 3 a side View of the nozzle shown in Figure l,

Figure 4 an enlarged fragmentary section through the wall of the nozzleand a moistened article illustrating the drying action thereon, and

Figure 5 a modified form of nozzle.

Referring to the drawings, and more particularly to Figures 1 4, lindicates a cupshaped chamber, 2 an inlet leading to the bottom of thechamber and 3 perforations in the inner wall 4 of the chamber. Thenozzle is preferably cast in one piece, but if desired may be readilymade from stamped metal. The inlet 2 is suitably connected with a hoseor pipe of an air line for receiving air therefrom.

In Figure 5, I have shown the chamber l provided with an angular inlet2a and a conveX wall 4a having the perforations 321 therein. Thefunction of this nozzle is similar to the one shown in Figures l to 4except that it is better adapted for drying articles of different shape.

Assuming the nozzle to be connected with an air line, the air turned on,and an article 5, indicated in dot-and-dash lines at 6 in Figure 2 is tobe dried, the nozzle shown in Figures l-4 is placed over the article asshown in Figure 2, so that the air coming into the chamber through inlet2 at a certain velocity, will leave the chamber through perforations 3at a higher velocity and will impinge against the surface of thearticle, and thus dry the same. The drying action is due to the air (seeFigure 4), escaping Vjacent perforations,

7, 1925. Serial No. 73,825.

through each perforation and impngng flected radially in alll directionsalong the surface of the article to a point 7 where it meets similarcurrents of air from the adand thus causes the strata of air immediatelysurrounding the article to move at a high velocity in all directions.This lowers the pressure of the air immediately surrounding the articleand thereby hastens evaporation of the moisture on the article.

lVhile I have described my invention as i taking a particular form, itwill be understood that the various parts may be changed withoutdeparting from the spirit thereof, and hence I do not limit myself tothe precise construction set forth, but consider that I am liberty tomake such changes and alterations as fairly come within the scope of theappended claims.

Having thus described my invention, what I claim as new and desire tosecure by Iletters Patent iszl. An air nozzle articles comprising an aircasing provided with an annular extension and an inlet pipe, the innerwall of said extension being perforated to effect a discharge of airfrom said casing into the space surrounded by said extension at a highervelocity than the velocity of air entering said inlet.

2. An air nozzle for drying moistened articles comprising an air casingprovided with an imperforate wall and a perforated wall relativelyspaced with respect to each other, said imperforate wall having an airinlet opening` therein, said casing having an annular portion extendingabove the plane of the perforated wall, the inner wall of said extensionbeing perforated, the perforations in said walls being of a size toeffect discharge of air from the casing into the space surrounded bysaid annular portion at a higher velocity than the velocity of airpassing through said inlet.

In testimony whereof name to this specification.

KARL HERMAN.

I have signed my for drying moistened`

